My battery died in my xterra, i had to jump start it now my radio wont turn on in my 2002 nissan xterra. how do i reset it? is there a code??

Check crankshaft sensor.

Have your battery checked it should read about 13.3 volts with the car off. If the batt. is discharged have it charged and then check your alternator to make sure it is charging.

Check the cleanliness and tightness of the battery terminals. Loosen, twist and retighten them. Also check the cleanliness and tightness of the black earth cable where it attaches to the engine block/bodywork. A bad earth can cause the symptoms you describe.

A quick check you can do is to connect a jump cable to the battery negative terminal - the earth - and connect the other end of the cable to somewhere suitable on the engine/bodywork.

If the car starts no problem with the jumper cable - it's pointing towards a bad earth/connection somewhere on the battery earth

check that you have an earth wire in the system as the earth bolt on the back of the unit is normally fixed to plastic hence the unit has no earth

Verify first that the radio fuse is not blown or accesories fuse.Hopefully no permanent damage from a spike, let me know if this helps or we can go further

if you dont have the code your going to have to call the dealer. Or seach online for radio codes. Its going to cost you if you can't find it in your service books

Your radio believes that it has been stolen out of the car since battery power was lost to it (as a result of the car battery going dead). There should be instructions in the user manual on how to reset the radio.

Hi, check the fuse box for a blown fuse in the radio slot. sometimes during jumps, this fuse will blow.

check you battery and battery cables...sounds like a big voltage drop

starter possibly going bad